AOR-E
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII W OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 17TH OF DECEMBER 2024 AT 08:30 UTC.
NOTE: WX OBSERVATIONS.
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COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE PLEASE MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.
AREA 1:
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FORECAST VALID FROM 171000 TO 181000 UTC:
WIND IN KNOTS, WAVE HEIGHTS IN METERS. NO SEA STATE GIVEN IF WAVES LESS THAN 3M.
NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.
INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5.
WAVE HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS, WHICH MAY BE ACCOMPANIED BY INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.
GALE FORCE WARNINGS:
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1. TRISTAN: NW 35 in the central-south towards mid-period, spreading to
the south-east in the second half of the period.
SYNOPTIC CHART 06:00Z
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High 1024 hPa 30s08w, High 1024 hPa 33s75e
Low 1000 hPa 43s25w, Low 960 hPa 46s32e
1. Cold Front: 30s30w 35s22w into 43s25w
2. Cold Front: 37s25e 40s35e 43s37e into 46s32e
AREA FORECAST:
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ASCENSION (06S/15S, 00E/20W):
WIND : SE to E 10 to 20.
VIS : Good.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 05 to 15, but W to SW 05 to 10 in the east.
VIS : Good, but moderate to poor in showers and thundershowers in
the east at times.
ST HELENA (15S/30S, 00E/20W):
WIND : E to SE 10 to 20, but N to NW 10 to 20 in the south-west.
VIS : Good, but moderate in showers in the south-west.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 10 to 20, reaching 25 to 30 in the south-east in the
first half of the period.
VIS : Good.
SEA STATE: 3.0 to 3.5m in the south-east in the first half of the period,
with SW to S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : W to SW 05 to 15 in the east and south-east, otherwise NW to N
15 to 25, reaching 30 in the south-west and drifting to the
central-south towards mid-period while reaching 35 and
spreading to the south-east in the second half of the period.
VIS : Moderate to poor in showers and rain at times, mainly in the
west and south.
SEA STATE: 3.0 to 3.5m in the west by mid-period, spreading to the south-
East during the second half of the period, with W to NW swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : S to SE 10 to 20 in the north-east, otherwise W to
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